I didn't wear these much, and they've already become too small. I think they can still be worn, so if anyone wants them... I bought these from various places, I think. The sizes correspond to those marked 15-20. The high socks (red, gray, white) might be a bit larger. The white socks were used less frequently. Only the white high socks have a name written on the soles. I'm a casual inspector, so there may be oversights. Please purchase only if you understand and accept this.